Concrete floor construction



J. GROSS CONCRETE -FLooR coNsTRuc'rIon March 19, 1929.

Filed May 18, 1927 Patented Mar. 19, 1929.

vUNITED STA TES .PATENT oFFicE.

JOSEPH GROSS, OF`PITTSBURGH, PENNSYLVANIA, ASSIGNOR 0F ONE-HALF TO JOHN H. SMITH, OF PHILADELPHIA, PENNSYLVANIA.

CONCRETE FLOOR CONSTRUCTION.

Application inea MayA is',

My invention refers to improvements ink structure.

In modern practice of floor construction, the floor is formed of a continuous cast slab or body portion having regularly spaced integral beam members, cast or poured `around inverted U-shaped sheet metal forms, in connection'with lowerceiling members of various construction.

My invention relates to an improved form of ceiling memberor lath, so constructed as to provide for ample stiffness Vand rigidity, openworlr body portion for anchoring engagement by theA concrete,transverse stift'- ening rib portions, andyupwardly'turned terminal edge portions, for engagement with the downwardly-disposed edge portions of the U-shaped member, together with other features of construction and improvement, as more fully hereinafter described.

Referring to the drawings,showing cer tain `preferred embodiments of they invention, .f y

Fig. l is a sectional view through a portion of a floor constructed according to my invention;

Fig. 2 is a plan view yof one ofthe ceiling reinforcing members, detached;

Fig. 3 is a partial perspective view of `one end of said ceiling member;

Fig. 4 is adetail view showing the edge portion of such member bent inwardly between the reinforcing ribs, and over the flange of the floor form; j l

' Fig. l5 is a parti Vl planview of the lath member showing a portion of the edgel turned inwardly;

Fig. 6 is a plan view'showing a modified construction; n f

Fig. 7 is a partial -perspectiveview of a modification ofFig. 3. 7 l

v In concrete-floor construction the main fioor A is cast or poured asa continuous slab with spaced beam'membersa extending aty intervals underneath the floor in the manner ofabeam.

' The `beams are formed between the downwardly extending leg portions 2of'the sheet metal forms 3, which are supported during 1927. serial No. 192,304.

the pouring ofthe concrete, together with the ceiling lath members on false worker .other suitable framing. Forms 8 are pro--A yvided at the lower edges of their end portions 2 with laterally lextending flanges 4,

rprojecting outwardly of the form. y

Underneath the forms 3, where a ceiling 1s desired,V I provide the reinforcing ceiling members B. Said member consists generally of a horizontal section, preferably of sheet metal, having edge portions adapted to be fbent upwardly around the anges'4 where desired for clamping engagement therewith.

Ceiling member B is generallyl troughshaped, having a, series of transverse upwardly extending rib members 6 of V-.shape or other suitable form, andpreferably imperforatefor stiffness; y

Between the several reinforcing ribs 6 the metal is open, either in the form of netting, vperforated metal, expanded metal, or of any suitable vopen mesh construction, adapted to permitl of anchoringv connection of the cement, plasteror other material forming the ceiling 5. Such expanded metal or open construction extends clear through vfrom one edge to the other,land is upturned`,as at 7,

together with upturned ends 8 of the several rib members 6,"as in Fig. 3. Y

As thus constructed the member B is adapted to -be laid. up underneath and agaii'istl the flanges. 4 of the ,formk 3, and to be bent over thereon gat intervals for clinching en- -nection therewith, and of providing amplegagcment therewith, as .shown at 9, Figs. 1,

and continuous-anchoring connection-for the ceiling layer 5.

In Fig. 6 I show a modified construction .in which the main body portion ofv they ceil-y ing lath member is composed of reticulated or perforate material of any suitable kind. .The opposite edge portions are slitted inwardly, as at I0, providing for bending the iupstanding lsections 8 between alternately arranged laterally Lextending sections 11.

lThese may-'be bent over around the flanges 4 inthe same mannerv as described, or if preferred'v'the portionsy 11 may be bent over, 'leaving the parts A8l erect. Vith reither construction the ceiling member will be` firmly ico anchored in the concrete when poured around these edge portions in 'forming the beam a, the upstanding parts 8 extending intoy and becoming firmly imbedded within the 'middle portion of the concrete beam.

ln Fig. 7 Il show a further modified construction in which the lath member is slitted at the edges at each side of the ribs 6, as at l2.

rl'he ribs are turned upwardly as already described, leaving the open mesh intervening portions extending beyond on a continuous plane. As thus made the lath may be located in position and some or all ot the projec portions may be turned up around the flanges 4 of the forms il, as desired. lilith either form oi? lath, it will be observed that the adjacent upstancing edges oit' the ceiling infnnber extend inwardly from the sides of the beam and are closer together than the width of' the finished beam.

Such arrangement allows thc con -rete to freely flow around each side of the upstmuling edge portions ot the ceiling member, completely imbedding and anchoring them i within and between the sides of the beam.

The particular advantage of the construction is that-it may be fabricated in the shop and delivered in the field with the vupwardly turned edges at each side, ready for immediate application and connection tov tli-.e forms 8, when these are placed, as in the oli' the usual. advantages of such reinforced lower ceiling construction, with a maximum strength and a minimum of Vmaterial7 with complete avoidance of any .tendency to n ndue strain or fracture.

rlhe ceiling llath of either of the forms shown are comparatively simple and inexpensive; they may be made in various sizes to suit the particular work in view; are easily and quickly applied by the Workman; and can be compactly packed for shipment or storage.

rlhe particular kind ot open work' or mesh between. the reinforcing ribs is immaterial, and the forms 3 may also be made '1. y f either ol plane or corrugated metal. 'lhese and various other changes or modifications may be made by the skilled mechamc, and

series of horizontally continuous transverse stiftening ribs with intervening open or eX- panded metal web portions and with its edges including' the ribs bent up in the form of a trough, while maintaining the same shape oit rib in the upstanding and entirel horizontal portions, intervening edge portions between the bent up ribs being adapted for inward bending. Y

3. ln concrete floor construction, the combination with an inverted tl-shaped sheet metal torni having laterallyV extending ges, of a. ceiling supporting member consisting ot a sheet met-al bodyv having transverse supporting ribs extending from end to end on a common plane andhaving upturned ends and `upwardly bent intervening edge portions .adapted to be bent over between the upturned ends of the ribs and secured to said flanges,. and providing 'for complete anchorage of the upturned rib terminals in the concrete body of the floor construction. i Y

et. ln combination with supporting form members for concrete floor construction having beam forming sides provided with flanges extending laterally beyond the sides, a transversely plane ceiling lath member of perforate material having upwardlyV extending edge portions adapted to extend up-` wardly beyond the flanges, and intervening edge periorate portions adapted to be bent over into holding engagement with. the flanges. 'i i 5. ln vcombination with supporting tor-m members for concrete floor'construction having beam forming sides provided v with flanges extending laterally beyond the sides,

a transversely plane ceiling lath member of perforate material having upwardly extending edge portions adapted to extend upwardly beyond the flanges, and intervening perforate edge portions adapted to be bent loo over inwardly into holding'engagement with the flanges, at positions materially within the width of the concrete beam to be formed whereby to. become anchored therein. y

In testimony whereof ll hereunto affix; my signature. f

.roeren cinese., 

